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something that you say after a name or list of names to refer to other people in the group This issue is discussed in more detail in the article by Cooper et al.
et tu, Brute?
(pronounced “Bru-TAY”) An expression of feeling betrayed. Marcus Brutus was one of the conspirators against Julius Caesar, formerly his great friend. Shakespeare's drama has Caesar's dying words the Latin for “and you, Brutus?” meaning “and you too” and uttered with tragic resignation as the Roman emperor recognized Brutus as one of his assassins.
See also: ET